package com.itfs.jdbc;

import java.sql.*;

//第一个jdbc的程序
public class JdbcFirstDemo {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        //1.加载驱动
        Class.forName("com.mysql.jdbc.Drier");
        //2.用户信息和url
        String url = "jdbc:mysql://localhost:3306/jdbcstudy?useUnicode=true&charaterEncoding=utf8&useSSL=true";
        String username = "root";
        String password = "123456";

        //3.链接成功，数据库对象，Connection , 代表数据库
        Connection connection = DriverManager.getConnection(url, username, password);

        //4.执行SQL对象 statement  执行生气了对象
        Statement statement = connection.createStatement();

        //5.执行sql对象， 去 执行sql， 可能存在结果，查看返回结果。
        String sql = "SELECT * FROM users";
        ResultSet resultSet = statement.executeQuery(sql);//返回的结果集，结果集中封装了我们全部的查询结果数据

        while(resultSet.next()){
            System.out.println("id=" + resultSet.getObject("id"));
            System.out.println("name=" + resultSet.getObject("NAME"));
            System.out.println("pwd=" + resultSet.getObject("PASSWORD"));
            System.out.println("email=" + resultSet.getObject("email"));
            System.out.println("birthday=" + resultSet.getObject("birthday"));
        }
    }

}
